Search U.S. government technical reports digitized or harvested by TRAIL.
Block-caving mining methods and costs Bagdad Mine, Bagdad Copper Corp. Yavapai County, Ariz.
Open-pit copper mining methods, Morenci Branch, Phelps Dodge Corp., Greenlee County, Ariz.
Open-pit copper mining methods at New Cornelia Branch, Phelps Dodge Corp., Pima County, Ariz.
Fracturing a deposit with nuclear explosives and recovering copper by the in-situ leaching method
Fracturing hard rock with nuclear explosives and extraction of ore by a modified block-caving method